/Engine/Plugins/Runtime/XRBase/Source/XRBase/Public/HeadMountedDisplayFunctionLibrary.h
Cross XR-System query that returns critical information about the motion controller (position, orientation, hand/finger position)
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Input|XRTracking") static void GetMotionControllerData ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * WorldContext, const EControllerHand Hand, [FXRMotionControllerData](API\Runtime\HeadMountedDisplay\FXRMotionControllerData) & MotionControllerData )